The Seven Buried Angels. The Buried Angels Saga, #2

Seven ancient angels were buried beneath the world. Now one of them is waking under Karachi. After exposing the Seraphim phenomenon to the world, Dr. Mira Saeed and Cassian Vale are no longer chasing a single glowing mystery beneath the sea. They are facing something far larger: seven buried living intelligences hidden across Earth's most fragile places-reefs, ice, drowned cities, old signal stations, rainforests, trenches, and forgotten ruins.
When a blue-eyed angel awakens beneath Karachi and a dangerous global network begins racing to control the Seraphim nodes, Mira is forced back into her father's secrets. Cassian, still haunted by his criminal past, must confront the powerful men who shaped him, including the ruthless godfather who knows exactly how to use fear as a weapon. From the Red Sea to Greenland, from an abandoned Soviet listening station to the flooded tunnels beneath Karachi, Mira and Cassian uncover a terrifying truth: the seven angels were not buried to hide from humanity.
They were buried to protect humanity from an eighth force-one that feeds on fear and has now found its way back. Darkly romantic, cinematic, and filled with action, betrayal, science, fantasy, family secrets, and high-stakes adventure, The Seven Buried Angels continues The Buried Angels Saga with a deeper love story, a more dangerous enemy, and a world-changing mystery that reaches far beyond the ocean.